Here's what rhymes with stackable.
implacable Words that almost rhyme with stackable
taxable affable passable chasuble bankable addible actual animal tangible palpable axonal fallible tractable cannibal flammable laughable blamable satiable savable national practical radical rational valuable casual maximal adaptable fractional impassable mandible factional detachable verapamil impassible cantabile frangible attractable fanciable compatible diagonal irrational infallible intangible intractable clavicle inflammable impalpable cantonal expandable madrigal merchantable nontaxable retractable graspable unflappable declarable invaluable impractical interactional octagonal collapsible unpractical nonflammable international grammatical incompatible understandable hexagonal lnternational supranational transactional semiannual nondetachable multinational transnational ungrammatical